A client with sleep apnea has been ordered a CPAP machine. Which action could the RN delegate to a nursing assistant?

The correct answer is reminding the client to apply the CPAP at bedtime. This task can be safely delegated to a nursing assistant as it involves a simple and routine reminder. Option B, obtaining oxygen saturation levels, requires a higher level of training and interpretation of results, making it more appropriate for an RN. Option C, teaching the client how to turn on the CPAP machine, involves educating the client and ensuring proper use of medical equipment, which is within the RN's scope of practice. Option D, assessing for fatigue or depression, requires a comprehensive evaluation that involves interpreting symptoms and identifying underlying causes, making it more suitable for an RN to address.